BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-03-01'
	and o_orderdate < cast(date '1996-03-01' + interval '3 month' as date)
	and exists (
		select
			*
		from
			lineitem
		where
			l_orderkey = o_orderkey
			and l_commitdate < l_receiptdate
	)
group by
	o_orderpriority
order by
	o_orderpriority;
                                                                                  QUERY PLAN                                                                                  
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=1175100.35..1175100.35 rows=1 width=16) (actual time=11678.457..11678.459 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2672126 read=387509 written=1107
   ->  HashAggregate  (cost=1175100.33..1175100.34 rows=1 width=16) (actual time=11678.392..11678.392 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2672121 read=387509 written=1107
         ->  Nested Loop Semi Join  (cost=12901.51..1174295.79 rows=160908 width=16) (actual time=336.816..11378.238 rows=526979 loops=1)
               Buffers: shared hit=2672121 read=387509 written=1107
               ->  Bitmap Heap Scan on orders  (cost=12900.95..277611.96 rows=594001 width=20) (actual time=336.689..2932.492 rows=574740 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-03-01'::date) AND (o_orderdate < '1996-06-01'::date))
                     Heap Blocks: exact=230471
                     Buffers: shared hit=142200 read=89934 written=250
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12752.44 rows=594001 width=0) (actual time=251.770..251.770 rows=579879 loops=1)
                           Index Cond: ((o_orderdate >= '1996-03-01'::date) AND (o_orderdate < '1996-06-01'::date))
                           Buffers: shared read=1663 written=2
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.53 rows=5 width=4) (actual time=0.014..0.014 rows=1 loops=574740)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2529921 read=297575 written=857
 Planning time: 2.948 ms
 Execution time: 11681.641 ms
(21 rows)

COMMIT;
COMMIT